Central National Bank (Apex Building) - View this location on map Distinctive twin-turreted bank, one of a cluster of financial buildings that distinguish Market Square as a prime 19th century business center; among the last 19th-century structures along the Pennsylvania Avenue ceremonial route; characteristic Victorian design by prominent architect Alfred B. Mullett; built 1859-60 as Seaton House, a Renaissance-Revival-style hotel (renamed the Saint Marc in 1871); purchased and extensively remodeled in 1887 by Central National Bank (including new facades, towers, banking hall, and iron vaults); five stories with brown Seneca sandstone facades, rock-faced granite base, and conical turrets with dormers and iron finials; design echoes the old Center Market and illustrates the undulating projections permitted by building code revisions of the 1870s; renovation and addition 1984-85 7th Street and Pennsylvania Avenue, NW, Washington , DC Historical

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